Deleted the following from C:\Users\Nanard\AppData\Roaming\Mozilla\Firefox\Profiles\7xbhwlx8.default-1432233384137\prefs.js
user_pref(browser.search.searchengine.desc, this is my first firefox searchEngine);
user_pref(browser.search.searchengine.ptid, pcs);
user_pref(browser.search.searchengine.uid, TOSHIBAXMK3275GSX_Z1H5S78CSXXZ1H5S78CS);